Finding the Fourth Proportional to 135.48, 202.68 and 119.28
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Solution
The fourth proportional to 135.48, 202.68 and 119.28 is: 178.44
Step by Step Solution
- Step 1: Write the proportion equation
135.48 : 202.68 = 119.28 : x - Step 2: Convert to fraction form
135.48/202.68 = 119.28/x - Step 3: Cross multiply
135.48x = 202.68 × 119.28 - Step 4: Simplify right side
135.48x = 24,175.67 - Step 5: Solve for x
x = 24,175.67/135.48 - Step 6: Final answer
x = 178.44
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.